US4491254A - Liquid chemical applicator - Google Patents

Liquid chemical applicator Download PDF

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Publication number
US4491254A
US4491254A US06421122 US42112282A US4491254A US 4491254 A US4491254 A US 4491254A US 06421122 US06421122 US 06421122 US 42112282 A US42112282 A US 42112282A US 4491254 A US4491254 A US 4491254A
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US
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Grant
Patent type
Prior art keywords
applicator
container
chemical
water
passageway
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06421122
Inventor
Alan K. Viets
James D. Amerine
Henry M. Lowe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
O M SCOTT AND SONS COMPANY A CORP OF
Scott O M and Sons Co
Original Assignee
Scott O M and Sons Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/244Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using carrying liquid for feeding, e.g. by suction, pressure or dissolution, a carried liquid from the container to the nozzle
    • B05B7/2443Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using carrying liquid for feeding, e.g. by suction, pressure or dissolution, a carried liquid from the container to the nozzle the carried liquid and the main stream of carrying liquid being brought together downstream of the container before discharge
    • B05B7/2445Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using carrying liquid for feeding, e.g. by suction, pressure or dissolution, a carried liquid from the container to the nozzle the carried liquid and the main stream of carrying liquid being brought together downstream of the container before discharge and a secondary stream of carrying liquid being brought together in the container or putting the carried liquid under pressure in the container

Abstract

A liquid applicator for dispensing a chemical, such as a herbicide, in dilute aqueous form. The applicator has a first container adapted to contain a concentrated chemical and a second container adapted to receive chemical from the first container prediluted with water. A valve controls the flow of chemical and water from the first to the second container and controls the flow of water to an aspirator which further dilutes and discharges the chemical.

Description

This invention relates to a liquid applicator for dispensing a chemical in dilute aqueous form.

Typical hose end lawn or garden sprayers are aspirator units which apply fertilizers, pesticides or other chemicals at a fixed, low dilution ratio. To utilize concentrates which must be diluted to high ratios, the user normally predilutes the concentrate with water. This is accomplished by volume measurement of the concentrate with a spoon, cap or other measuring device into a sprayer mix jar. Water is then added to obtain the proper premix concentration. The prediluted concentrate is then further diluted to its final dilution ratio as the sprayer is operated.

Such predilution procedures require the manual handling of concentrated chemicals with its attendant risks. Moreover, the user must generally purchase the concentrate in larger quantities than are necessary for a single application and thus containers of the concentrated chemical must be stored for extended periods after they have been opened. On the other hand devices which attempt to avoid predilution by diluting the concentrate at a high ratio in one step are not satisfactory because of very poor accuracy.

The concept of two-step mixing or dilution of chemicals, including such use in spraying devices is known. See, for example, U.S. Pat. Nos. 2,006,437; 2,599,678; 2,711,928; 2,760,820; 3,104,823; 3,181,797; 3,499,606; and 4,027,822. However, the devices shown in these patents are either cumbersome or otherwise unsuitable for garden spray devices.

Devices for adding a liquid additive to a flow of fluid by use of a container of a concentrated chemical having a rupturable seal are also known. U.S. Pat. Nos. 3,833,177 and 3,993,245 show two such devices. Other patents which show devices for delivering mixtures of chemicals and which utilize containers having a rupturable seal are U.S. Pat. Nos. 2,580,629; 3,123,253; 3,255,924 and 4,250,911. However, the devices shown in these patents are not adapted to overcome the problem of high dilution ratios.

It is accordingly a primary object of this invention to provide a liquid applicator for dispensing a chemical at high but yet accurate dilution ratios.

It is a further object of this invention to provide a liquid applicator device which performs a two-stage dilution of a chemical without the necessity of manual intervention or physical contact with the chemical by the user.

The foregoing and other objects of the invention are achieved in a liquid applicator for dispensing a chemical in dilute aqueous form comprising an applicator body containing a first passageway therethrough for the passage of water from a water source to the exterior of the applicator, a first container connected with said applicator body adapted to contain a chemical therein, a second container connected with said applicator body adapted to contain a chemical diluted with water, said applicator body containing a second passageway for passage of chemical and water from said first container to said second container, valve means intersecting said first passageway adapted to divert water from said first passageway into said first container to flush chemical from said first container into said second container and predilute said chemical with water, said first passageway containing an aspirator therein for withdrawal and further dilution of prediluted chemical from the second container and for discharge of said diluted chemical from the applicator.

The invention will be better understood by reference to the accompanying drawing in which:

FIG. 1 is an elevational view of one embodiment of a liquid applicator in accordance with the invention;

FIG. 2 is a perspective view of a container for concentrated chemical;

FIG. 3 is a fragmentary sectional view of the container and applicator valve viewed along the lines 3--3 of FIG. 4 to show the manner in which the rupturable seal is broken;

FIG. 4 is a plan view of the applicator body;

FIG. 5 is an elevational view of the applicator body;

FIG. 6 is a sectional view along the lines 6--6 of FIG. 5 showing the applicator valve in operating or spray position; and

FIG. 7 is a sectional view similar to FIG. 6 but showing the valve in mix position.

The applicator comprises an applicator body 1, a first container 2 and a second container 3, both containers connected by threaded engagement with the applicator body 1. Container 2 is mounted in inverted position on the applicator while container 3 is mounted in upright position vertically beneath container 2. Container 2 is adapted to contain a premeasured amount of a concentrated chemical, as for example, a herbicide, insecticide, other pesticide or fertilizer. Container 2 may actually take the form of a cartridge or vial. Container 3, on the other hand, will normally be of larger size than container 2 and is adapted to contain chemical from container 2 prediluted with water. The applicator also contains a conventional nozzle 4 in threaded engagement at one end thereof with the applicator body and adapted at its other end to connect with a source of water to control the passage of water through the applicator. Any suitable on-off valve means could of course replace the nozzle to control the flow of water from an outside source into the applicator.

As shown in FIG. 2, the container 2 contains a rupturable seal 5 across its opening and a cap 6 for threaded engagement and closure of the container. The seal 5 may be conveniently made of plastic and prevents escape of chemical from the container after removal of cap 6 and during attachment of the container to the applicator.

The applicator body contains a first passageway 7 extending horizontally across the applicator for the passage of water from the nozzle end to the exit end of the applicator. The applicator also contains a second, larger passageway 8 extending vertically through the applicator body for the passage of chemical and water from container 2 to large container 3. Mounted horizontally within the applicator body at right angles to both passageways 7 and 8 is a rotatable valve means 9. The valve 9 intersects the passageway 7 and protrudes into a vertical passageway 8. Valve 9 contains a tubular member 10 partially embedded within the valve and partially protruding from the valve into passageway 8, the protruding portion having a sharp extremity 11. Valve 9 also contains a hole 12 therethrough and a handle 13 for rotation of the valve. Upon rotation of the valve to a first position of rotation, that shown in FIG. 7, tubular member 10 aligns at the non-projecting end thereof with the water entrance end of passageway 7 while the projecting end of the tubular member faces upwardly in passageway 8 toward the open end of container 2. Upon rotation of the valve to a second position of rotation, that shown in FIG. 6, both ends of the hole 12 align with and complete horizontal passageway 7 to form a continuous passage from entrance to exit end of the applicator.

Passageway 7 contains an aspirator, generally designated by the numeral 14, at an intermediate position along its length. Aspirator 14 comprises a horizontally disposed venturi consisting of a high velocity passageway portion 15 and a portion 16 of larger diameter and reduced velocity. The aspirator also comprises a vertically disposed tube 17 extending into large container 3.

In operation, the applicator is connected to a garden hose or other water source through nozzle 4. Cap 6 is then removed from container 2 containing a concentrated chemical. Container 2 with seal 5 intact is threaded in inverted position into applicator body 1. Handle 13 is rotated so that the projecting end of tubular member 10 punctures seal 5, as illustrated in FIG. 3. In this position, the non-projecting end of tubular member 10 will be in alignment with the water entrance end of passageway 7. Water, permitted to enter through nozzle 4 into passageway 7, is diverted through tubular member 10 into first container 2 to flush chemical from container 2 into container 3 and at the same time predilute the chemical with water. Container 3 is then filled with the entire contents of container 2 diluted with sufficient water to either fill container 3 completely or to partially fill container 3 to a preselected level. Handle 13 is then rotated to align valve 9 in the position shown in FIGS. 4, 5 and 6 wherein hole 12 is in registry with the remaining portions of passageway 7. Water from the water source then flows across the aspirator 14, mixes with and further dilutes the premixed chemical and discharges the completely diluted chemical, normally as a spray, from the exit end of passageway 7.

Virtually any type of chemical concentrate designed for use in water can be used with the applicator of the invention. This includes solutions, emulsions, emulsifiable concentrates, suspensions, wettable powders and dry flowable chemicals. While the applicator may be used for a variety of end uses, it is particularly intended for use as a hose end lawn or garden sprayer for the delivery of pesticides or fertilizers.

Claims (9)

We claim:
1. A liquid applicator for dispensing a chemical in dilute aqueous form comprising
an applicator body containing a first passageway therethrough for the passage of water from a water source to the exterior of the applicator,
a first container connected with said applicator body adapted to contain a chemical therein,
a second container mounted vertically beneath said first container on said applicator body and adapted to contain a chemical diluted with water,
said applicator body containing a second passageway for passage of chemical and water by gravity from said first container to said second container,
valve means intersecting said first passageway adapted to divert water from said first passageway into said first container to flush chemical from said first container into said second container and predilute said chemical with water,
said first passageway containing an aspirator therein for withdrawal and further dilution of prediluted chemical from the second container and for discharge of said diluted chemical from the applicator.
2. The applicator of claim 1 in which the first container contains a rupturable seal across the opening thereof for containing the chemical therein.
3. The applicator of claim 2 in which said valve means includes a projecting tubular member through which water is diverted from said water source into said first container to flush chemical therefrom.
4. The applicator of claim 3 in which said valve means is a rotatable member having a first position of rotation in which water is diverted through said tubular member into said first container and a second position of rotation in which water passes through said aspirator to discharge diluted chemical from the second container.
5. The applicator of claim 3 in which said projecting tubular member contains a sharp extremity thereof which is adapted to rupture said seal.
6. The applicator of claim 3 having means in combination with said applicator body to control the passage of water into said applicator.
7. The applicator of claim 4 in which said valve means is mounted for rotation within said applicator body at right angles to the first and second passageways.
8. The applicator of claim 4 in which the tubular member at its non-projecting end is adapted for alignment, in said first position of rotation of said valve, with the water entrance end of said first passageway.
9. The applicator of claim 4 in which said valve means contains a hole therethrough adapted for alignment at both ends thereof, in said second position of rotation, with said first passageway.
US06421122 1982-09-22 1982-09-22 Liquid chemical applicator Expired - Fee Related US4491254A (en)

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054231A (en) * 1989-09-14 1991-10-08 Witherspoon Phynus R Fire ant eradication apparatus and method
US5213264A (en) * 1990-10-11 1993-05-25 Chevron Research And Technology Company Spraying device with a replaceable cartridge
US5443094A (en) * 1993-06-10 1995-08-22 Ecolab Inc. Concentrated product dilution system
US5544810A (en) * 1990-04-23 1996-08-13 S. C. Johnson & Son, Inc. Precision-ratioed fluid-mixing device and system
WO1998046366A1 (en) 1997-04-17 1998-10-22 Oms Investments, Inc. An improved spraying device
WO2001030507A1 (en) * 1999-10-28 2001-05-03 Tetrosyl Limited A dispenser
US20050103893A1 (en) * 2003-11-13 2005-05-19 Oms Investments, Inc. Spraying device with interchangeable cartridge
US7445167B1 (en) * 2007-01-10 2008-11-04 Shin Tai Spurt Water Of The Garden Tools Co., Ltd. Spraying gun for washing car
USD650046S1 (en) 2011-03-01 2011-12-06 Smg Brands, Inc. Sprayer
US8136698B1 (en) 2008-11-21 2012-03-20 Michael Sylvius Beaulieu Applicator for the delivery of solutions and materials in a pressurized fluid system
USD670982S1 (en) 2011-03-01 2012-11-20 Smg Brands, Inc. Applicator
USD681470S1 (en) 2010-01-08 2013-05-07 Oms Investments, Inc. Dispensing container
USD708301S1 (en) 2013-03-15 2014-07-01 Oms Investments, Inc. Liquid sprayer
US8944351B2 (en) 2011-05-06 2015-02-03 Saint-Gobain Abrasives, Inc. Paint cup assembly with an outlet valve
US9061293B2 (en) 2008-11-21 2015-06-23 Michael S. Beaulieu Applicator for the delivery of solutions and materials in a pressurized fluid system
US9162240B2 (en) 2004-12-16 2015-10-20 Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasie Liquid container system for a spray gun
US9586220B2 (en) 2011-06-30 2017-03-07 Saint-Gobain Abrasives, Inc. Paint cup assembly
US9980430B2 (en) 2014-12-19 2018-05-29 Oms Investments, Inc. Ready-to-use hose end sprayer

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2006437A (en) * 1932-09-28 1935-07-02 O & W Thum Company Apparatus for diffusing pyrethrum
US2536361A (en) * 1946-03-11 1951-01-02 Austin P Flanders Plant food feeder
US2580629A (en) * 1951-05-21 1952-01-01 Edwin H Wenzel Combined water spray and chemical dispenser
US2599678A (en) * 1949-05-11 1952-06-10 Walker Walter Spraying apparatus
US2711928A (en) * 1954-10-21 1955-06-28 Randa Donald Ernest Mixing valves for car washing and other purposes
US2760820A (en) * 1954-06-30 1956-08-28 Nu Way Harvester Company Applicator for water soluble fertilizers, fungicides, insecticides, and the like
US3104823A (en) * 1963-09-24 Mixing apparatus
US3123253A (en) * 1964-03-03 Mixing device for delivering liquid mixtures or solutions
US3181797A (en) * 1963-04-03 1965-05-04 Hayes Spray Gun Company Mixing apparatus having plural eductors
US3255924A (en) * 1964-04-08 1966-06-14 Modern Lab Inc Pressurized dispensing device
US3443726A (en) * 1967-08-18 1969-05-13 Nat Can Corp Multiple element mixing and dispensing container
US3499606A (en) * 1967-06-20 1970-03-10 Hercules Inc Invert emulsion spray apparatus and method
US3833177A (en) * 1972-08-21 1974-09-03 H Pasley Fluid disseminating device
US3993245A (en) * 1975-02-06 1976-11-23 Shell Oil Company Method and apparatus for spraying agrochemicals
US4027822A (en) * 1975-08-25 1977-06-07 George William Usher Attachment device for a shower unit
US4250911A (en) * 1979-09-28 1981-02-17 Kratz David W Chemical feeder with disposable chemical container
US4382552A (en) * 1981-09-08 1983-05-10 The O. M. Scott & Sons Company Liquid applicator
US4385034A (en) * 1981-10-02 1983-05-24 Gacer Richard H Apparatus for dissolving and dispensing soluble compounds

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104823A (en) * 1963-09-24 Mixing apparatus
US3123253A (en) * 1964-03-03 Mixing device for delivering liquid mixtures or solutions
US2006437A (en) * 1932-09-28 1935-07-02 O & W Thum Company Apparatus for diffusing pyrethrum
US2536361A (en) * 1946-03-11 1951-01-02 Austin P Flanders Plant food feeder
US2599678A (en) * 1949-05-11 1952-06-10 Walker Walter Spraying apparatus
US2580629A (en) * 1951-05-21 1952-01-01 Edwin H Wenzel Combined water spray and chemical dispenser
US2760820A (en) * 1954-06-30 1956-08-28 Nu Way Harvester Company Applicator for water soluble fertilizers, fungicides, insecticides, and the like
US2711928A (en) * 1954-10-21 1955-06-28 Randa Donald Ernest Mixing valves for car washing and other purposes
US3181797A (en) * 1963-04-03 1965-05-04 Hayes Spray Gun Company Mixing apparatus having plural eductors
US3255924A (en) * 1964-04-08 1966-06-14 Modern Lab Inc Pressurized dispensing device
US3499606A (en) * 1967-06-20 1970-03-10 Hercules Inc Invert emulsion spray apparatus and method
US3443726A (en) * 1967-08-18 1969-05-13 Nat Can Corp Multiple element mixing and dispensing container
US3833177A (en) * 1972-08-21 1974-09-03 H Pasley Fluid disseminating device
US3993245A (en) * 1975-02-06 1976-11-23 Shell Oil Company Method and apparatus for spraying agrochemicals
US4027822A (en) * 1975-08-25 1977-06-07 George William Usher Attachment device for a shower unit
US4250911A (en) * 1979-09-28 1981-02-17 Kratz David W Chemical feeder with disposable chemical container
US4382552A (en) * 1981-09-08 1983-05-10 The O. M. Scott & Sons Company Liquid applicator
US4385034A (en) * 1981-10-02 1983-05-24 Gacer Richard H Apparatus for dissolving and dispensing soluble compounds

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5054231A (en) * 1989-09-14 1991-10-08 Witherspoon Phynus R Fire ant eradication apparatus and method
US5544810A (en) * 1990-04-23 1996-08-13 S. C. Johnson & Son, Inc. Precision-ratioed fluid-mixing device and system
US5213264A (en) * 1990-10-11 1993-05-25 Chevron Research And Technology Company Spraying device with a replaceable cartridge
US5443094A (en) * 1993-06-10 1995-08-22 Ecolab Inc. Concentrated product dilution system
WO1998046366A1 (en) 1997-04-17 1998-10-22 Oms Investments, Inc. An improved spraying device
US5881955A (en) * 1997-04-17 1999-03-16 Monsanto Company Spraying device
WO2001030507A1 (en) * 1999-10-28 2001-05-03 Tetrosyl Limited A dispenser
US8235310B2 (en) 2003-11-13 2012-08-07 Oms Investments, Inc. Spraying device with interchangeable cartridge
US20050103893A1 (en) * 2003-11-13 2005-05-19 Oms Investments, Inc. Spraying device with interchangeable cartridge
US7156324B2 (en) 2003-11-13 2007-01-02 Oms Investments, Inc. Spraying device with interchangeable cartridge
US9427755B2 (en) 2003-11-13 2016-08-30 Oms Investments, Inc. Spraying device with interchangeable cartridge
US9162240B2 (en) 2004-12-16 2015-10-20 Saint-Gobain Abrasives, Inc./Saint-Gobain Abrasie Liquid container system for a spray gun
US7445167B1 (en) * 2007-01-10 2008-11-04 Shin Tai Spurt Water Of The Garden Tools Co., Ltd. Spraying gun for washing car
US8136698B1 (en) 2008-11-21 2012-03-20 Michael Sylvius Beaulieu Applicator for the delivery of solutions and materials in a pressurized fluid system
US9061293B2 (en) 2008-11-21 2015-06-23 Michael S. Beaulieu Applicator for the delivery of solutions and materials in a pressurized fluid system
USD681470S1 (en) 2010-01-08 2013-05-07 Oms Investments, Inc. Dispensing container
USD650046S1 (en) 2011-03-01 2011-12-06 Smg Brands, Inc. Sprayer
USD779898S1 (en) 2011-03-01 2017-02-28 Oms Investments, Inc. Applicator
USD797529S1 (en) 2011-03-01 2017-09-19 Oms Investments, Inc. Applicator
USD736577S1 (en) 2011-03-01 2015-08-18 Oms Investments, Inc. Applicator
USD670982S1 (en) 2011-03-01 2012-11-20 Smg Brands, Inc. Applicator
US9335198B2 (en) 2011-05-06 2016-05-10 Saint-Gobain Abrasives, Inc. Method of using a paint cup assembly
US8998018B2 (en) 2011-05-06 2015-04-07 Saint-Gobain Abrasives, Inc. Paint cup assembly with an extended ring
US8944351B2 (en) 2011-05-06 2015-02-03 Saint-Gobain Abrasives, Inc. Paint cup assembly with an outlet valve
US9586220B2 (en) 2011-06-30 2017-03-07 Saint-Gobain Abrasives, Inc. Paint cup assembly
USD708301S1 (en) 2013-03-15 2014-07-01 Oms Investments, Inc. Liquid sprayer
US9980430B2 (en) 2014-12-19 2018-05-29 Oms Investments, Inc. Ready-to-use hose end sprayer

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AS Assignment

Owner name: O. M. SCOTT AND SONS COMPANY, EAST SIXTH STREET, M

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:VIETS, ALAN K.;AMERINE, JAMES D.;LOWE, HENRY M.;REEL/FRAME:004049/0078

Effective date: 19820915

Owner name: O. M. SCOTT AND SONS COMPANY, A CORP. OF DE, OHIO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:VIETS, ALAN K.;AMERINE, JAMES D.;LOWE, HENRY M.;REEL/FRAME:004049/0078

Effective date: 19820915

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Year of fee payment: 4

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Owner name: MANUFACTURERS HANOVER TRUST COMPANY

Free format text: SECURITY INTEREST;ASSIGNOR:O.M. SCOTT & SONS COMPANY, THE, A DE CORP.;REEL/FRAME:006144/0219

Effective date: 19920407

LAPS Lapse for failure to pay maintenance fees
FP Expired due to failure to pay maintenance fee

Effective date: 19930103

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Owner name: SCOTTS COMPANY, THE, OHIO

Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:CHEMICAL BANK;REEL/FRAME:007439/0064

Effective date: 19950317